Calories Required to Raise the Temp of Aluminum

1. The problem statement, all variables and given/known data



How many calories are required to raise the temperature of 26 grams of aluminum from 20°C to 115°C?



2. Relevant equations



Specific heat of aluminum is 0.22 cal / g x °C



Amount of heat = SH x mass x (T2-T1)



3. The attempt at a solution



Plugging numbers into the 2nd equation gives me:



cal = 0.22 x 26 x 95

cal = 543.4



So I get 543.4 calories as the answer, or 5.4 x 10² calories. However, my workbook only has the following as possible answers:



5.4 x 10⁺¹

5.4 x 10^-1

5.4 x 10⁺³

5.4 x 10^-3



Have I missed something here, or is my workbook wrong?